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    <title>ShellCheck: SC2121 – To assign a variable, use just `var=value`, not `set ..`.</title>
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    <h1>SC2121 – ShellCheck Wiki</h1>
    <a href="https://github.com/koalaman/shellcheck/wiki/SC2121">See this page on GitHub</a>
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    <h2 id="to-assign-a-variable-use-just-varvalue-not-set-">To assign a
variable, use just <code>var=value</code>, not <code>set ..</code>.</h2>
<h3 id="problematic-code">Problematic code:</h3>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="SC2121.html#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="bu">set</span> var=42</span>
<span id="cb1-2"><a href="SC2121.html#cb1-2" aria-hidden="true" tabindex="-1"></a><span class="bu">set</span> var 42</span></code></pre></div>
<h3 id="correct-code">Correct code:</h3>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="SC2121.html#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="va">var</span><span class="op">=</span>42</span></code></pre></div>
<h3 id="rationale">Rationale:</h3>
<p><code>set</code> is not used to set or assign variables in Bourne
shells. It's used to set shell options and positional parameters.</p>
<p>To assign variables, use <code>var=value</code> with no
<code>set</code> or other qualifiers.</p>
<h3 id="exceptions">Exceptions</h3>
<p>If you actually do want to set positional parameters, simply quoting
them or using <code>--</code> will make shellcheck stop warning, e.g.
<code>set -- var1 var2</code> or <code>set "foo=bar"</code>.</p>
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    <p style='font-size: 80%'><a href="../index.html">ShellCheck</a> is a static analysis tool for shell scripts. This page is part of its documentation.</p>
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